opencourse.dev - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

opencourse.dev

DNSSEC⚠️ Not signed
A2600:9000:24ef:200:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A2600:9000:24ef:2200:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A2600:9000:24ef:3e00:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A2600:9000:24ef:4000:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A2600:9000:24ef:4600:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A2600:9000:24ef:6c00:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A2600:9000:24ef:cc00:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A2600:9000:24ef:de00:1:81a5:5cc0:93a1🇺🇸 Amazon2600:9000:24ef::/48
A18.161.34.13🇺🇸 Amazon18.161.32.0/21
A18.161.34.28🇺🇸 Amazon18.161.32.0/21
A18.161.34.99🇺🇸 Amazon18.161.32.0/21
A18.161.34.102🇺🇸 Amazon18.161.32.0/21
NSns-1825.awsdns-36.co.uk ⭐
A2600:9000:5307:2100::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront
PTRns-1825.awsdns-36.co.uk
A205.251.199.33🇺🇸 Amazon205.251.199.0/24 prefix
PTRns-1825.awsdns-36.co.uk
NSns-1160.awsdns-17.org
A2600:9000:5304:8800::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront
PTRns-1160.awsdns-17.org
A205.251.196.136🇺🇸 Amazon205.251.196.0/24 prefix
PTRns-1160.awsdns-17.org
NSns-226.awsdns-28.com
A2600:9000:5300:e200::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-226.awsdns-28.com
A205.251.192.226🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-226.awsdns-28.com
NSns-992.awsdns-60.net
A2600:9000:5303:e000::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
PTRns-992.awsdns-60.net
A205.251.195.224🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-992.awsdns-60.net
MXinbound-smtp.us-east-1.amazonaws.com ⭐
A3.211.210.226🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix
PTRec2-3-211-210-226.compute-1.amazonaws.com
A44.206.9.87🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix
PTRec2-44-206-9-87.compute-1.amazonaws.com
A44.210.166.32🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix
PTRec2-44-210-166-32.compute-1.amazonaws.com
A54.164.173.191🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix
PTRec2-54-164-173-191.compute-1.amazonaws.com
A54.197.5.236🇺🇸 Amazon54.196.0.0/15 EC2 IAD 54.196.0.0/15
PTRec2-54-197-5-236.compute-1.amazonaws.com
SOAns-1825.awsdns-36.co.ukawsdns-hostmaster@amazon.com serial=1

dev

DNSSEC⚠️ Not signed
NSns-tld1.charlestonroadregistry.com ⭐
NSns-tld2.charlestonroadregistry.com
NSns-tld3.charlestonroadregistry.com
NSns-tld4.charlestonroadregistry.com
NSns-tld5.charlestonroadregistry.com
SOAns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=1
🔒 HSTS Preload (+subdomains)

Same first word

opencourse.com.au
opencourse.it
opencourse.live
opencourse.tw
opencourse.us
opencourse.ca
opencourse.online
opencourse.space
opencourse.biz.id
opencourse.net
opencourse.xyz
opencourse.com.cn
opencourse.dev
opencourse.vn
opencourse.world
opencourse.eu
opencourse.com
opencourse.golf
opencourse.info
opencourse.kr
opencourse.co
opencourse.org
opencourse.workers.dev
opencourse.ru
opencourse.no
opencourse.de
opencourse.ai
opencourse.si
opencourse.ph
opencourse.pages.dev
opencourse.co.uk

Similar names

opensource.com.do
opensource.house
opensource.golf
opensource.school
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opensource.or.kr
opensource.fm
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opensource.qa
opensource.man
opensource.guru
neuroscope.xyz
opensource.day
opensource.ac.cn
opensource.co
opensource.gr
superecono.com
opensource.capital
opensource.com.pk
opensource.tv
opensource.com.vn
opensource.net.br
opensource.beauty
econosuper.mx
opensource.de
opensource.net.my
opensource.org.pk
superecono.online
coopeneurs.com
opensource.ch
opensource.aws
opensource.lgbt
opensource.koeln
opensource.pw
opensource.farm
opensource.earth
opensource.social
opensource.win
opensource.gr.jp
opensource.net
opensource.nyc
opensource.city
opensource.org.pl
opensource.kz
opensource.co.ke
opensource.shop
opensource.net.cn
opensource.ec
neuroscope.ee
opensource.finance
opensource.cool
opensource.co.za
opensource.center
opensource.network
opensource.net.ph
opensource.co.at
opensource.cat
opensource.observer
neuroscope.space
opensource.stream
opensource.vet
opensource.be
opensource.sn
opensource.com
opensource.fitness
opensource.ink
opensource.cloud
opensource.science
opensource.agency
opensource.best
opensource.training
opensource.coffee
opensource.email
opensource.academy
opensource.army
opensource.eu.com
scoreoneup.com
opensource.art
opensource.de.com
opensource.today
opensource.fr
opensource.es
opensource.jp
opensource.ro
neuroscope.ph
opensource.google
neuroscope.site
opensource.sg
opensource.you
opensource.joburg
opensource.legal
opensource.clothing
opensource.lt
opensource.how
opensource.international
opensource.restaurant
opensource.chat
opensource.news
neuroscope.ai
opensource.pages.dev
opensource.parts

Previous names

opencontent.dev
opencontest.dev
opencontext.dev
opencontinuity.dev
opencontract.dev
opencontrast.dev
opencontrol.dev
openconvert.dev
opencookie.dev
opencora.dev
opencord.dev
opencore.dev
opencorejs.dev
opencorelegacypatcher.dev
opencorporates.dev
opencorridor.dev
opencost.dev
opencosts.dev
opencouncil.dev

Next names

opencourt.dev
opencov.dev
opencoven.dev
opencovers.dev
opencowork.dev
opencpi.dev
opencrab.dev
opencrash.dev
opencrate.dev
opencrawl.dev
opencre.dev
opencreator.dev
opencred.dev
opencredit.dev
opencrm.dev
opencron.dev
opencrop.dev
opencrs.dev
opencrust.dev
opencrvs.dev

DNS History

46 records (17 active, 29 former)

NSns-1160.awsdns-17.orgns-1825.awsdns-36.co.ukns-226.awsdns-28.comns-992.awsdns-60.netMXinbound-smtp.us-east-1.amazonaws.comA18.161.34.10218.161.34.1318.161.34.2818.161.34.992600:9000:24ef:200:1:81a5:5cc0:93a12600:9000:24ef:2200:1:81a5:5cc0:93a12600:9000:24ef:3e00:1:81a5:5cc0:93a12600:9000:24ef:4000:1:81a5:5cc0:93a12600:9000:24ef:4600:1:81a5:5cc0:93a12600:9000:24ef:6c00:1:81a5:5cc0:93a12600:9000:24ef:cc00:1:81a5:5cc0:93a12600:9000:24ef:de00:1:81a5:5cc0:93a12600:9000:2046:0:1:81a5:5cc0:93a12600:9000:2046:5c00:1:81a5:5cc0:93a12600:9000:2046:800:1:81a5:5cc0:93a12600:9000:2046:9e00:1:81a5:5cc0:93a12600:9000:2046:a200:1:81a5:5cc0:93a12600:9000:2046:a400:1:81a5:5cc0:93a12600:9000:2046:b200:1:81a5:5cc0:93a12600:9000:2046:c200:1:81a5:5cc0:93a12600:9000:24ef:1200:1:81a5:5cc0:93a12600:9000:24ef:2000:1:81a5:5cc0:93a12600:9000:24ef:2800:1:81a5:5cc0:93a12600:9000:24ef:3400:1:81a5:5cc0:93a12600:9000:24ef:400:1:81a5:5cc0:93a12600:9000:24ef:4400:1:81a5:5cc0:93a12600:9000:24ef:600:1:81a5:5cc0:93a12600:9000:24ef:6000:1:81a5:5cc0:93a12600:9000:24ef:7200:1:81a5:5cc0:93a12600:9000:24ef:7800:1:81a5:5cc0:93a12600:9000:24ef:a00:1:81a5:5cc0:93a12600:9000:24ef:a400:1:81a5:5cc0:93a12600:9000:24ef:aa00:1:81a5:5cc0:93a12600:9000:24ef:b200:1:81a5:5cc0:93a12600:9000:24ef:bc00:1:81a5:5cc0:93a12600:9000:24ef:be00:1:81a5:5cc0:93a12600:9000:24ef:c600:1:81a5:5cc0:93a152.85.118.10452.85.118.12152.85.118.252.85.118.91
●NSns-1160.awsdns-17.org2026-10-07 → 2026-11-15 · 2 obs
● 2026-10-07 21:30:28
● 2026-11-15 05:47:02
●NSns-1825.awsdns-36.co.uk2026-10-07 → 2026-11-15 · 2 obs
● 2026-10-07 21:30:28
● 2026-11-15 05:47:02
●NSns-226.awsdns-28.com2026-10-07 → 2026-11-15 · 2 obs
● 2026-10-07 21:30:28
● 2026-11-15 05:47:02
●NSns-992.awsdns-60.net2026-10-07 → 2026-11-15 · 2 obs
● 2026-10-07 21:30:28
● 2026-11-15 05:47:02
●MXinbound-smtp.us-east-1.amazonaws.com2026-11-11 → 2026-11-15 · 2 obs
● 2026-11-11 23:01:26
● 2026-11-15 05:47:02
●A18.161.34.1022026-11-11 → 2026-11-15 · 3 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
● 2026-11-15 05:47:02
●A18.161.34.132026-11-11 → 2026-11-15 · 3 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
● 2026-11-15 05:47:02
●A18.161.34.282026-11-11 → 2026-11-15 · 3 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
● 2026-11-15 05:47:02
●A18.161.34.992026-11-11 → 2026-11-15 · 3 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
● 2026-11-15 05:47:02
○A2600:9000:2046:0:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:2046:5c00:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:2046:800:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:2046:9e00:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:2046:a200:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:2046:a400:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:2046:b200:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:2046:c200:1:81a5:5cc0:93a12026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A2600:9000:24ef:1200:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 4 obs
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
○ 2026-11-15 05:47:00
○ 2026-11-15 05:47:02
●A2600:9000:24ef:200:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-15 03:59:30
● 2026-11-15 05:47:00
● 2026-11-15 05:47:02
○A2600:9000:24ef:2000:1:81a5:5cc0:93a12026-11-11 → 2026-11-15 · 6 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
○ 2026-11-15 05:47:00
○ 2026-11-15 05:47:02
●A2600:9000:24ef:2200:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-15 03:59:30
● 2026-11-15 05:47:00
● 2026-11-15 05:47:02
○A2600:9000:24ef:2800:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 4 obs
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
○ 2026-11-15 05:47:00
○ 2026-11-15 05:47:02
○A2600:9000:24ef:3400:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 4 obs
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
○ 2026-11-15 05:47:00
○ 2026-11-15 05:47:02
●A2600:9000:24ef:3e00:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-15 03:59:30
● 2026-11-15 05:47:00
● 2026-11-15 05:47:02
○A2600:9000:24ef:400:1:81a5:5cc0:93a12026-11-11 → 2026-11-11 · 4 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-12 03:49:42
○ 2026-11-15 05:47:02
●A2600:9000:24ef:4000:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
● 2026-11-15 05:47:02
○A2600:9000:24ef:4400:1:81a5:5cc0:93a12026-11-12 → 2026-11-12 · 4 obs
○ 2026-11-11 23:01:26
● 2026-11-12 03:49:42
○ 2026-11-15 03:59:30
○ 2026-11-15 05:47:02
●A2600:9000:24ef:4600:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
● 2026-11-15 05:47:02
○A2600:9000:24ef:600:1:81a5:5cc0:93a12026-11-11 → 2026-11-11 · 4 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-15 03:59:30
○ 2026-11-15 05:47:02
○A2600:9000:24ef:6000:1:81a5:5cc0:93a12026-11-11 → 2026-11-11 · 4 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-12 03:49:42
○ 2026-11-15 05:47:02
●A2600:9000:24ef:6c00:1:81a5:5cc0:93a12026-11-12 → 2026-11-15 · 5 obs
○ 2026-11-11 23:01:26
● 2026-11-12 03:49:42
○ 2026-11-15 03:59:30
● 2026-11-15 05:47:00
● 2026-11-15 05:47:02
○A2600:9000:24ef:7200:1:81a5:5cc0:93a12026-11-11 → 2026-11-11 · 4 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-12 03:49:42
○ 2026-11-15 05:47:02
○A2600:9000:24ef:7800:1:81a5:5cc0:93a12026-11-12 → 2026-11-12 · 4 obs
○ 2026-11-11 23:01:26
● 2026-11-12 03:49:42
○ 2026-11-15 03:59:30
○ 2026-11-15 05:47:02
○A2600:9000:24ef:a00:1:81a5:5cc0:93a12026-11-12 → 2026-11-12 · 4 obs
○ 2026-11-11 23:01:26
● 2026-11-12 03:49:42
○ 2026-11-15 03:59:30
○ 2026-11-15 05:47:02
○A2600:9000:24ef:a400:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 4 obs
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
○ 2026-11-15 05:47:00
○ 2026-11-15 05:47:02
○A2600:9000:24ef:aa00:1:81a5:5cc0:93a12026-11-11 → 2026-11-11 · 4 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-15 03:59:30
○ 2026-11-15 05:47:02
○A2600:9000:24ef:b200:1:81a5:5cc0:93a12026-11-12 → 2026-11-12 · 4 obs
○ 2026-11-11 23:01:26
● 2026-11-12 03:49:42
○ 2026-11-15 03:59:30
○ 2026-11-15 05:47:02
○A2600:9000:24ef:bc00:1:81a5:5cc0:93a12026-11-12 → 2026-11-12 · 4 obs
○ 2026-11-11 23:01:26
● 2026-11-12 03:49:42
○ 2026-11-15 03:59:30
○ 2026-11-15 05:47:02
○A2600:9000:24ef:be00:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 4 obs
○ 2026-11-12 03:49:42
● 2026-11-15 03:59:30
○ 2026-11-15 05:47:00
○ 2026-11-15 05:47:02
○A2600:9000:24ef:c600:1:81a5:5cc0:93a12026-11-11 → 2026-11-11 · 4 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-12 03:49:42
○ 2026-11-15 05:47:02
●A2600:9000:24ef:cc00:1:81a5:5cc0:93a12026-11-15 → 2026-11-15 · 3 obs
○ 2026-11-15 03:59:30
● 2026-11-15 05:47:00
● 2026-11-15 05:47:02
●A2600:9000:24ef:de00:1:81a5:5cc0:93a12026-11-11 → 2026-11-15 · 5 obs
○ 2026-10-07 21:30:28
● 2026-11-11 23:01:26
○ 2026-11-12 03:49:42
● 2026-11-15 05:47:00
● 2026-11-15 05:47:02
○A52.85.118.1042026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A52.85.118.1212026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A52.85.118.22026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02
○A52.85.118.912026-10-07 → 2026-10-07 · 3 obs
● 2026-10-07 21:30:28
○ 2026-11-11 23:01:26
○ 2026-11-15 05:47:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
devns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com...10 records
opencourse.devns-226.awsdns-28.com, ns-1160.awsdns-17.org, ns-1825.awsdns-36.co.uk, ns-992.awsdns-60.net-

✅ Authoritative Response

Server:205.251.192.226

NS records: ns-226.awsdns-28.com, ns-1160.awsdns-17.org, ns-1825.awsdns-36.co.uk, ns-992.awsdns-60.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opencourse.dev (unsigned zone)

⏱️ Timing

Total: 664ms | Queries: -

📄 Records

TypeCountSample Data
A418.161.34.28, 18.161.34.102...
AAAA82600:9000:24ef:5800:1:81a5:5cc0:93a1, 2600:9000:24ef:dc00:1:81a5:5cc0:93a1...
NS4ns-1160.awsdns-17.org, ns-1825.awsdns-36.co.uk...
MX1inbound-smtp.us-east-1.amazonaws.com (pr
SOA1ns-1825.awsdns-36.co.uk awsdns-hostmaste

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

opencourse.dev directs to 12 IP numbers: 18.161.34.13, 18.161.34.28, 18.161.34.99 and 9 other.

Two other host names, along with olyrion.fr, gohitchapp.com and torbayfabricsandgifts.ca, also share IP numbers with opencourse.dev.

Name Servers

The NS records for opencourse.dev point to four name servers: ns-226.awsdns-28.com, ns-992.awsdns-60.net, ns-1160.awsdns-17.org and ns-1825.awsdns-36.co.uk.

There is at least partial name server overlap between opencourse.dev and other domains — mei-yu-art.com, ls.st, interracialpayperview.com and two more among them.

The name servers ns-643.awsdns-16.net, ns-1102.awsdns-09.org and ns-1926.awsdns-48.co.uk are often found in combination with these name servers.

All four hostnames — ns-226.awsdns-28.com, ns-992.awsdns-60.net, ns-1160.awsdns-17.org and ns-1825.awsdns-36.co.uk — resolve to two IP numbers apiece: ns-226.awsdns-28.com to 205.251.192.226 and 2600:9000:5300:e200::1; ns-992.awsdns-60.net to 205.251.195.224 and 2600:9000:5303:e000::1; ns-1160.awsdns-17.org to 205.251.196.136 and 2600:9000:5304:8800::1; ns-1825.awsdns-36.co.uk to 205.251.199.33 and 2600:9000:5307:2100::1.

Mail Servers

The sole mail server for opencourse.dev is inbound-smtp.us-east-1.amazonaws.com.

Among the domains sharing a mail server setup with opencourse.dev are clayosophy.com, woze-dx.com, nvidia.enterprise.slack.com and two others.

There is at least a partial MX overlap between opencourse.dev and other domains, including terrainfogroup.atlassian.net, servicechannel.atlassian.net, kangarooinvest.com and two others.

inbound-smtp.us-east-1.amazonaws.com points to five IP addresses: 3.211.210.226, 44.206.9.87, 44.210.166.32 and two more.